Hair iron



FIG. 1 is a perspective view of the present invention;

FIG. 2 is a front elevation view of the present invention;

FIG. 3 is a rear elevation view of the present invention;

FIG. 4 is a left side elevation view of the present invention;

FIG. 5 is a right side elevation view of the present invention;

FIG. 6 is a top plan view of the present invention; and,

FIG. 7 is a bottom plan view of the present invention.

The ornamental design for a “hair iron,” as shown and described.